ABAP Select data from SAP table TKSR1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TKSR1 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to TKSR1. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the TKSR1 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_TKSR1 TYPE STANDARD TABLE OF TKSR1,
      WA_TKSR1 TYPE TKSR1,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <TKSR1> TYPE TKSR1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TKSR1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TKSR1
  INTO TABLE IT_TKSR1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TKSR1
*  INTO TABLE @DATA(IT_TKSR12).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_TKSR1 INDEX 1 INTO DATA(WA_TKSR12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TKSR1 ASSIGNING <TKSR1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TKSR1>-MANDT = 1.
<TKSR1>-ROLLUP = 1.
<TKSR1>-KOKRS = 1.
<TKSR1>-AREA = 1.
<TKSR1>-ROLL_COSP = 1.

ENDLOOP.

LOOP AT IT_TKSR1 INTO WA_TKSR1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TKSR1-ROLL_COSS, sy-vline,
  WA_TKSR1-ROLL_COSL, sy-vline,
  WA_TKSR1-ROLL_COSR, sy-vline,
  WA_TKSR1-REORG_DEL, sy-vline,
  WA_TKSR1-REORG_RES, sy-vline,
  WA_TKSR1-INLIST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TKSR1 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_TKSR1 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_TKSR1 INTO WA_TKSR1.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TKSR1_STR, 
MANDT TYPE STRING,
ROLLUP TYPE STRING,
KOKRS TYPE STRING,
AREA TYPE STRING,
ROLL_COSP TYPE STRING,
ROLL_COSS TYPE STRING,
ROLL_COSL TYPE STRING,
ROLL_COSR TYPE STRING,
REORG_DEL TYPE STRING,
REORG_RES TYPE STRING,
INLIST TYPE STRING,
OUTLIST TYPE STRING,
BRGRU TYPE STRING,
CNAM TYPE STRING,
CDAT TYPE STRING,
UNAM TYPE STRING,
UDAT TYPE STRING,
SNAM TYPE STRING,
SDAT TYPE STRING,
SETID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TKSR1_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_TKSR1_STR-MANDT sy-vline 
WA_TKSR1_STR-ROLLUP sy-vline 
WA_TKSR1_STR-KOKRS sy-vline 
WA_TKSR1_STR-AREA sy-vline 
WA_TKSR1_STR-ROLL_COSP sy-vline 
WA_TKSR1_STR-ROLL_COSS sy-vline 
WA_TKSR1_STR-ROLL_COSL sy-vline 
WA_TKSR1_STR-ROLL_COSR sy-vline 
WA_TKSR1_STR-REORG_DEL sy-vline 
WA_TKSR1_STR-REORG_RES sy-vline 
WA_TKSR1_STR-INLIST sy-vline 
WA_TKSR1_STR-OUTLIST sy-vline 
WA_TKSR1_STR-BRGRU sy-vline 
WA_TKSR1_STR-CNAM sy-vline 
WA_TKSR1_STR-CDAT sy-vline 
WA_TKSR1_STR-UNAM sy-vline 
WA_TKSR1_STR-UDAT sy-vline 
WA_TKSR1_STR-SNAM sy-vline 
WA_TKSR1_STR-SDAT sy-vline 
WA_TKSR1_STR-SETID sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.